Fix appstream file (#607)

This MR fixes the appstream file to fix the error produced in https://github.com/flathub/com.github.qarmin.czkawka/pull/11.

data/com.github.qarmin.czkawka.metainfo.xml

@@ -26,5 +26,5 @@
   <url type="homepage">https://github.com/qarmin/czkawka</url>
   <url type="bugtracker">https://github.com/qarmin/czkawka/issues</url>
   <url type="donation">https://github.com/sponsors/qarmin</url>
-  <url type="translation">https://crowdin.com/project/czkawka</url>
+  <url type="translate">https://crowdin.com/project/czkawka</url>
 </component>